Morph AGA quits back to DOS after the intro - As does the CD32 version

From memory, Morph has some unusual ECS/AGA detection in it. If the Amiga (or emulator) is detected as ECS, and you run the AGA version, it will just quit. And vice versa. Make sure you definitely have all the relevant AGA settings on if you are using the AGA version and it should work.